HSK 7-9
交界
jiāojiè动
common boundary; common border
小镇位于两省交界地带。
Xiǎo zhèn wèi yú liǎng shěng jiāo jiè dì dài.
The town lies along the boundary between two provinces.
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Appears across levels (7-9) in the HSK 3.0 word list.